Whats the sensor in the supra airbox do?

[Coke]

Finally put a pod filter on my 2jzge supra and have found some type of sensor that plugs into the piping just after the filter. Does this measure temperature of filtered air? Do I need it?
Sorry in advance if this is a stupid question

[rollaholic]

yes and yes

[Coke]

yes and yes

Cheers mate! forgot how fast you can get answers on here